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Heterocorallia

A Dictionary of Earth Sciences | 1999 | 481 words | Copyright

Heterocorallia (subclass Zoantharia) Small order of corals, known only from Carboniferous rocks in Europe and Asia, and represented by two genera, Hexophyllia and Heterophyllia. It is included in the Zoantharia because its members possess septa, and because of the microstructure of the calcareous skeleton. The septa are arranged differently from those in other orders. The four original septa are conjoined axially, and new septa are formed attached to these at their axial ends.

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AILSA ALLABY and MICHAEL ALLABY. "Heterocorallia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

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AILSA ALLABY and MICHAEL ALLABY. "Heterocorallia." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Heterocorallia.html

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